Using the Acceleration Equation

Try it

A cyclist going downhill is accelerating at 1.2 m/s2. If the final velocity of the cyclist is 16 m/s

is the cyclist's initial velocity?

o oo

0 4 m/s

O 12 m/s

O 18 m/s

O 20 m/s

Change in velocity (/Delta v) is acceleration (a) times time (t)

Acceleration a=1.2 / m/s^{2}

Time t=10 / s

So / Delta v=at=1.2 / m/s^{2}*10 / s=12 / m/s

The initial velocity is then 16 / m/s-12 / m/s=4 / m/s

Easy Answer: 4m/s